While I can't really imagine Narcissa and Andromeda using a vibrator in the middle of the deserted Slytherin Common Room where anyone could walk in on them - wouldn't that be embarrassing? - I really loved how you wrote this.
I really can see Narcissa's mistrust of everything Muggle change for a few select objects after that though :p
Good work!

I'm so not surprised about Narcissa getting upset about using a Muggle object! I can totally picture her reacting that way. I can kind of picture Andromeda being the one to know what a vibrator is, too, since she ends up marrying a Muggle-born. "Either stop squirming around and just let me show you what it's for, or I'm going to tell Bellatrix that you stole her lipstick. And we all know the kind of fight that we'd be in for if I did that…" was pretty amusing, I liked that line. As always, the smut was written extremely well, also, and although I don't ship this, I think you did a great job with the fic!